Silksong's Steel Soul Mode Exclusive Quest and Boss Explained

The well of mysteries is so deep in Silksong that there are secrets behind secrets! Hidden behind a Permadeath mode that can only be accessed with a special code in the main menu is a quest that culminates in a boss fight and unique reward. Here's everything you need to know about the "A Vassal Lost" wish, hidden in Hollow Knight Silksong's Steel Soul (Permadeath) mode.